[Bug fortran/30512] MAXVAL() incorrect for zero-size int arrays, and for -HUGE-1 maximum values.

[burnus at gcc dot gnu dot org]

------- Comment #1 from burnus at gcc dot gnu dot org  2007-01-20 09:37 -------
Vaguely related is:

trans-intrinsic.c's gfc_conv_intrinsic_minmaxval, which contains currently:

  /* Most negative(-HUGE) for maxval, most positive (-HUGE) for minval.  */
  if (op == GT_EXPR)
    tmp = fold_build1 (NEGATE_EXPR, TREE_TYPE (tmp), tmp);

Which has a broken comment and also the -HUGE vs -HUGE-1 problem (for
BT_INTEGER only).


Regarding the library, m4/iparm.m4 contains:
define(atype_max, atype_name`_HUGE')dnl
define(atype_min, `-'atype_max)dnl

Subtracting one from atype_min is the correct thing to do for BT_INTEGER, but
not for BT_REAL.


-- 

burnus at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-01-20 09:37:56
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30512